1ec5 left a comment (openstreetmap/openstreetmap-website#6234)
Thanks for opening this ticket and starting the conversation about a full
migration to GL JS. OpenHistoricalMap’s fork of this project has been using
maplibre-gl-leaflet for some time to avoid deviating too much from OSM, but
this plugin’s limitations become apparent pretty quickly.
I agree that we should target a single map library if possible. In theory, a
dual-library setup would enable us to keep supporting non-WebGL-capable
environments, but I’d expect the code maintenance overhead to be substantial.
We could make our own mapstraction library on top of both, but that would get
us right back to square one with maplibre-gl-leaflet.
> How to use the just-introduced vector-based marker definitions with MapLibre
> is also a point I'm unsure about, considering the CSS- and DOM-driven
> coloring.
There are two ways to put a “pin” on a MapLibre map:
* [A DOM
element](https://maplibre.org/maplibre-gl-js/docs/examples/add-custom-icons-with-markers/)
using the [marker
API](https://maplibre.org/maplibre-gl-js/docs/examples/add-a-default-marker/).
This would be pretty similar to what we’re already doing.
* [A symbol
layer](https://maplibre.org/maplibre-gl-js/docs/examples/center-the-map-on-a-clicked-symbol/)
using the runtime styling API. This is the traditional MapLibre approach with
better performance and the ability to have the symbol underlap other layers,
but interactivity is harder to implement. This is the same API we’d use to
overlay an element’s geometry or a route line on the map, but it would probably
be overkill for just a marker.
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